EP3186868A1 - Power grid system and method of determining power consumption at one or more building connections in a power grid system - Google Patents
Power grid system and method of determining power consumption at one or more building connections in a power grid systemInfo
- Publication number
- EP3186868A1 EP3186868A1 EP15835110.6A EP15835110A EP3186868A1 EP 3186868 A1 EP3186868 A1 EP 3186868A1 EP 15835110 A EP15835110 A EP 15835110A EP 3186868 A1 EP3186868 A1 EP 3186868A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- power
- building
- power grid
- mains
- meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007596 consolidation process Methods 0.000 claims abstract description 35
- 238000004590 computer program Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
- G01R21/1333—Arrangements for measuring electric power or power factor by using digital technique adapted for special tariff measuring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Definitions
- the present invention relates broadly to a power grid system and to a method of determining power consumption thereof at one or more building connections in a power grid system.
- PV photo-voltaic
- Embodiments of the present invention provide a power grid system and a method of determining power consumption at one or more building connections in a power grid system that seek to address at least one of the above problems.
- a power grid system comprising a power grid comprising a mains grid portion; a plurality of building connections, each building connection comprising a first meter configured for metering power imported from the mains grid portion to the associated building and power exported from the associated building into the mains grid portion; for one or more of the building connections, at least one second meter disposed downstream from the first meter relative to the mains grid portion and configured for metering power exported to the associated building from an auxiliary generator; and a consolidation unit configured for determining power consumption at said one or more of the building connections based on readings from the associated first and second meters.
- a method of determining power consumption at one or more building connections in a power grid system comprising metering power imported from a mains grid portion of the power grid system to a building associated with respective ones of the one or more building connections and power exported from the associated building into the mains grid portion using a first meter; metering, for one or more of the building connections, power exported to the associated building from an auxiliary generator using a second meter disposed downstream from the first meter relative to the mains grid portion; and determining power consumption at said one or more of the building connections based on readings from the first and from the second meters.
- Figure 1 shows a schematic drawing illustrating a power grid system 100 according to an example embodiment.
- Figure 2 shows a flowchart illustrating a method of determining power consumption at one or more building connections in a power grid system and supply to a load at one or more building connections in a power grid system, according to an example embodiment.
- Figure 3 shows a series of voltages on a network associated with electrical conduction through various voltage transformers, each voltage level associated to a particular market settlement pool (.eg. Low Voltage, High Voltage, Extra High Voltage, etc.).
- FIG. 1 shows a schematic drawing illustrating a power grid system 100 according to an example embodiment.
- the system 100 comprises a power grid 102 comprising a mains grid portion 104.
- the power grid 102 is associated through flow of electrons and holes through the network and is associated with various voltages defined through the placement of voltage transformers matching a corresponding specification.
- the mains supply for the power grid 102 is from a transformer 119, as a step down from a higher voltage level.
- the application of transformers for establishing the various voltages on the power grid 102 network is understood in the art and will not be described herein in any detail.
- Figure 3 shows example voltage levels, e.g. Low Voltage 303, High Voltage 304, and Extra High Voltage 305 in a power grid network 300.
- Each of the transformers 301, 302 or the Extra High Voltage generator 306 can take the role of the transformer 119 illustrated in Figure 1.
- the power grid 102 network is used to transfer power among loads from various sources of electricity.
- this power grid 102 network is used to establish a central energy pool from which suppliers and consumers may trade, while the various voltages of the power grid 102 network may establish various markets and different settlements in pools associated to the specific voltage range.
- the power grid system 100 further comprises a plurality of building connections e.g. 106, 107, each building connection e.g. 106, 107 comprising bi-directional meters e.g. Ml, M3, configured for metering power imported from the mains grid portion 104 to the associated building e.g. 108, 110 and power exported from the associated building e.g. 108, 110 into the mains grid portion 104.
- a further meter M2 is disposed downstream from the first meter Ml relative to the mains grid portion 104 and is configured for metering power exported to one or more loads 112 in the associated building e.g. 108 from an auxiliary generator e.g. 114.
- the meter M2 is bidirectional, but it is noted that the meter M2 can be uni-directional in other embodiments, as will be appreciated by a person skilled in the art.
- each second meter may be provided downstream from one building connection.
- each second meter may be associated with a different auxiliary generator at or near the same building.
- a consolidation unit 116 of the system 100 is configured for determining power consumption at the one or more building connections e.g. 106 having the meter M2 based on readings from the meters Ml and M2.
- the consolidation unit 116 may be specially constructed for the required purposes, or may comprise a general purpose computer or other device selectively activated or reconfigured by a computer program stored in the computer.
- the algorithms and outputs presented herein are not inherently related to any particular computer or other apparatus.
- Various general purpose machines may be used with programs in accordance with the teachings herein.
- the construction of more specialized apparatus to perform the required method steps may be appropriate.
- the present specification also implicitly discloses a computer program, in that it would be apparent to the person skilled in the art that the individual steps of the method described herein may be put into effect by computer code.
- the computer program is not intended to be limited to any particular programming language and implementation thereof.
- the computer program is not intended to be limited to any particular control flow. There are many other variants of the computer program, which can use different control flows without departing from the spirit or scope of the invention. Furthermore, one or more of the steps of the computer program may be performed in parallel rather than sequentially.
- Such a computer program may be stored on any computer readable medium.
- the computer readable medium may include storage devices such as magnetic or optical disks, memory chips, or other storage devices suitable for interfacing with device selectively activated or reconfigured by the computer program.
- the computer readable medium may also include a hard- wired medium such as exemplified in the Internet system, or Wireless medium such as exemplified in the GSM mobile telephone system.
- the computer program when loaded and executed on the device effectively results in an apparatus that implements the steps of the preferred method.
- the consolidation unit 116 may also be implemented as hardware modules. More particularily, in the hardware sense, a module is a functional hardware unit designed for use with other components or modules. For example, a module may be implemented using discrete electronic components, or it can form a portion of an entire electronic circuit such as an Application Specific Integrated Circuit (ASIC). Numerous other possibilities exist. Those skilled in the art will appreciate that the system can also be implemented as a combination of hardware and software modules.
- ASIC Application Specific Integrated Circuit
- the consolidation unit 116 in the example embodiment is configured for determining the power consumption at the building connections 106 by calculating:
- Mn m port is the power imported from the mains grid portion 104 to the associated building 108
- Miexport is the power exported from the associated building 108 into the mains grid portion 104
- M2export is the power exported to the associated building 108 from the auxiliary generator 114.
- a transmission loss through this hardware may be incorporated within equation ( 1 ) to more accurately compute the flow of energy through the consolidation unit 116 by subtraction of the absolute transmission loss or through other means. In this embodiment it is assumed that this transmission loss is negligible and it is not investigated further.
- equation (1) can be readily extended to account for two or more second meters downstream of the associated building connection.
- the consolidation unit 116 is further configured for determining power supplied by the auxiliary generator 114 to the power grid 102 on the basis of the reading from the meter M2.
- the consolidation unit 116 is further configured for settling an aggregate supply of power from a plurality of auxiliary generators to one or more loads connected on the power grid system 100.
- the auxiliary generator 114 produces 50 kW over a specified consolidation period and exports all of the power via the meter M2.
- Case 1 The loads 112 in the associated building 108 consume 100 kW over the specified consolidation period.
- Ml meters that no power was exported from the building 108 to the mains grid portion 104 and that 50 kW were imported from the mains grid portion 104 into the building 108, being the difference between the power provided by the auxiliary generator 114 and the power consumed by the loads 1 12.
- the calculated power consumption C at building connection 106 is:
- the power consumption determined by the consolidation unit 116 in the example embodiment can preferably be used for settlement in an energy pool associated with the power grid system 100.
- the power client associated with the building 108 will have to settle a consumption bill for 100 kW in the pool, i.e. consistent with the actual consumption at the loads 112.
- the owner or stakeholder of the auxiliary generator 114 is settled on the basis of having sold 50 kW into the pool.
- Case 2 The loads 112 in the associated building 108 consume 25 kW over the specified consolidation period.
- M2 again meters 50 kW being exported from the auxiliary generator 114 to the building 108 during the specified consolidation period.
- the calculated power consumption C at building connection 106 is:
- the power consumption determined by the consolidation unit 116 in the example embodiment can preferably be used for settlement in the energy pool associated with the power grid system 100.
- the power client associated with the building 108 will have to settle a consumption bill for 25 kW in the pool, i.e. consistent with the actual consumption at the loads 112
- the owner or stakeholder of the auxiliary generator 114 is again settled on the basis of having sold 50 kW into the pool.
- the excess power provided by the auxiliary generator 114 into the pool can thus in effect be sold to other consumers, such as the power client associated with the building 110.
- the power consumption determined by the consolidation unit 116 in the example embodiment can preferably be used for settlement in the energy pool associated with the power grid system 100.
- the power client associated with the building 108 will incur no power charge, i.e. consistent with the (zero) consumption at the loads 112.
- the owner or stakeholder of the auxiliary generator 114 is again settled on the basis of having sold 50 kW into the pool.
- the excess power provided by the generator 114 into the pool can thus in effect be sold to other consumers, such as the power client associated with the building 110.
- Customer B and/or Customer C can be supplied based on a flexible settlement implementation in an example embodiment, as follows.
- Case 4 Assuming a total aggregate generation of 50 kW or more at the sources as measured through one or more consolidation units, and a demand of 25 kW at Customer B, and 25 kW at Customer C.
- Case 5 Assuming a total aggregate generation of 50 kW or more at the sources as measured through one or more consolidation units, and a demand of 50 kW at Customer B, and 0 kW at Customer C.
- the total aggregate generation is settled with Customer B, and no energy is settled with Customer C.
- example embodiments of the present invention can have one or more of the following advantages and technical effects:
- the auxiliary generator 1 14 may comprise a photo-voltaic (PV) generator.
- the PV generator may be disposed on a roof top area of the building 108.
- the consolidation unit 1 16 may further be configured to determine power consumption at one or more other building connections e.g. 107 on the basis of the reading from the meter M3.
- the consolidation unit 1 16 may be configured for remotely reading any one or more of the meters M1-M3.
- FIG. 2 shows a flowchart 200 illustrating a method of determining power consumption of one or more building connections in a power grid system, according to an example embodiment, and preferably allowing for the consolidated power units in aggregate, or as a fraction of the total generation at a given time, to be established through a settlement to one or more loads.
- step 202 power imported from a mains grid portion of the power grid system to a building associated with respective ones of the one or more building connections and power exported from the associated building into the mains grid portion using a first meter are metered.
- power exported to the associated building from an auxiliary generator using a second meter disposed downstream from the first meter relative to the mains grid portion is metered for one or more of the building connections.
- power consumption at said one or more of the building connections is determined based on readings from the first and from the second meters.
- the method further comprises at step 208 settling an aggregate supply of power from one or more auxiliary generators to one or more loads connected on the power grid system.
- the method may further comprise determining power supplied by the auxiliary generator to the power grid on the basis of the reading from the second meter.
- the auxiliary generator may comprise a photo-voltaic (PV) generator.
- the PV generator may be disposed on a roof top area of the building.
- the method may further comprise determining power consumption at one or more other building connections on the basis of the reading from the first meter.
- the method may comprise remotely reading the any one or more of the first and second meters.
- the mains supply for the power grid would be from a transformer, typically as a step down as described in the example embodiments, it will be appreciated that the present invention would also apply if the power grid is supplied directly from a mains power generator.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SG10201405341YA SG10201405341YA (en) | 2014-08-29 | 2014-08-29 | Power Grid System And Method Of Determining Power Consumption At One Or More Building Connections In A Power Grid System |
PCT/SG2015/050170 WO2016032396A1 (en) | 2014-08-29 | 2015-06-19 | Power grid system and method of determining power consumption at one or more building connections in a power grid system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3186868A1 true EP3186868A1 (en) | 2017-07-05 |
EP3186868A4 EP3186868A4 (en) | 2018-04-25 |
Family
ID=55400137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15835110.6A Withdrawn EP3186868A4 (en) | 2014-08-29 | 2015-06-19 | Power grid system and method of determining power consumption at one or more building connections in a power grid system |
Country Status (11)
Country | Link |
---|---|
US (2) | US20170285080A1 (en) |
EP (1) | EP3186868A4 (en) |
JP (1) | JP2017530686A (en) |
CN (1) | CN107112751A (en) |
AU (2) | AU2015307294A1 (en) |
CA (1) | CA2959626A1 (en) |
HK (1) | HK1243554A1 (en) |
PH (1) | PH12017500379A1 (en) |
SG (3) | SG10201405341YA (en) |
TW (1) | TW201617620A (en) |
WO (1) | WO2016032396A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10234885B2 (en) | 2016-06-13 | 2019-03-19 | Sun Electric Digital Stream Ltd. | Method and system for facilitating auditing of power generation and allocation thereof to consumption loads |
WO2019132774A1 (en) * | 2017-12-29 | 2019-07-04 | Sun Electric Digital Stream Ltd | Communication module and method for electric power supply applications |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3875149B2 (en) * | 2002-06-10 | 2007-01-31 | 三菱電機株式会社 | Solar power system |
JP3889679B2 (en) * | 2002-06-28 | 2007-03-07 | 三菱電機株式会社 | Power-related display device and private power generation system using the same |
US8295960B2 (en) * | 2007-04-17 | 2012-10-23 | Timothy Patrick Cooper | Load management controller for a household electrical installation |
JP5512212B2 (en) * | 2009-09-29 | 2014-06-04 | パナソニック株式会社 | Power management system |
US8401709B2 (en) * | 2009-11-03 | 2013-03-19 | Spirae, Inc. | Dynamic distributed power grid control system |
JP2011135651A (en) * | 2009-12-22 | 2011-07-07 | Panasonic Electric Works Co Ltd | Power supply system |
GB201005801D0 (en) * | 2010-04-07 | 2010-05-26 | Cooper Timothy P | A localy based electricity supply management system and method |
WO2012015508A1 (en) * | 2010-07-29 | 2012-02-02 | Spirae, Inc. | Dynamic distributed power grid control system |
US9893526B2 (en) * | 2011-03-25 | 2018-02-13 | Green Charge Networks Llc | Networked power management and demand response |
US8849715B2 (en) * | 2012-10-24 | 2014-09-30 | Causam Energy, Inc. | System, method, and apparatus for settlement for participation in an electric power grid |
JP6013076B2 (en) * | 2012-08-10 | 2016-10-25 | 京セラ株式会社 | Energy management device, energy management system, and energy management method |
GB2507039A (en) * | 2012-10-16 | 2014-04-23 | Ivy Ltd | Surplus power detection and diversion in co-generation system |
US9246334B2 (en) * | 2012-10-25 | 2016-01-26 | New Jersey Institute Of Technology | Alleviating solar energy congestion in the distribution grid via smart metering communications |
CN105556831B8 (en) * | 2013-04-13 | 2018-08-31 | 蜜獾国际有限公司 | System, method and apparatus for energy production load compensation |
-
2014
- 2014-08-29 SG SG10201405341YA patent/SG10201405341YA/en unknown
-
2015
- 2015-06-19 WO PCT/SG2015/050170 patent/WO2016032396A1/en active Application Filing
- 2015-06-19 JP JP2017531447A patent/JP2017530686A/en active Pending
- 2015-06-19 EP EP15835110.6A patent/EP3186868A4/en not_active Withdrawn
- 2015-06-19 SG SG11201700648QA patent/SG11201700648QA/en unknown
- 2015-06-19 US US15/507,286 patent/US20170285080A1/en not_active Abandoned
- 2015-06-19 SG SG10201802478XA patent/SG10201802478XA/en unknown
- 2015-06-19 CN CN201580054206.5A patent/CN107112751A/en active Pending
- 2015-06-19 CA CA2959626A patent/CA2959626A1/en not_active Abandoned
- 2015-06-19 AU AU2015307294A patent/AU2015307294A1/en not_active Abandoned
- 2015-08-28 TW TW104128382A patent/TW201617620A/en unknown
-
2017
- 2017-02-28 PH PH12017500379A patent/PH12017500379A1/en unknown
-
2018
- 2018-02-26 HK HK18102745.4A patent/HK1243554A1/en unknown
-
2019
- 2019-03-22 US US16/362,170 patent/US20190285670A1/en not_active Abandoned
- 2019-11-27 AU AU2019271982A patent/AU2019271982A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
TW201617620A (en) | 2016-05-16 |
EP3186868A4 (en) | 2018-04-25 |
AU2015307294A1 (en) | 2017-02-23 |
SG11201700648QA (en) | 2017-02-27 |
HK1243554A1 (en) | 2018-07-13 |
AU2019271982A1 (en) | 2019-12-19 |
PH12017500379A1 (en) | 2017-07-17 |
SG10201405341YA (en) | 2016-03-30 |
CN107112751A (en) | 2017-08-29 |
US20190285670A1 (en) | 2019-09-19 |
WO2016032396A1 (en) | 2016-03-03 |
SG10201802478XA (en) | 2018-04-27 |
US20170285080A1 (en) | 2017-10-05 |
CA2959626A1 (en) | 2016-03-03 |
JP2017530686A (en) | 2017-10-12 |
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